modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/execute/struct-ret-1.c (about)

     1  #include <stdio.h>
     2  #include <string.h>
     3  
     4  char out[100];
     5  
     6  typedef struct { double d; int i[3]; } B;
     7  typedef struct { char c[33],c1; } X;
     8  
     9  char c1 = 'a';
    10  char c2 = 127;
    11  char c3 = (char)128;
    12  char c4 = (char)255;
    13  char c5 = -1;
    14  
    15  double d1 = 0.1;
    16  double d2 = 0.2;
    17  double d3 = 0.3;
    18  double d4 = 0.4;
    19  double d5 = 0.5;
    20  double d6 = 0.6;
    21  double d7 = 0.7;
    22  double d8 = 0.8;
    23  double d9 = 0.9;
    24  
    25  B B1 = {0.1,{1,2,3}};
    26  B B2 = {0.2,{5,4,3}};
    27  X X1 = {"abcdefghijklmnopqrstuvwxyzABCDEF", 'G'};
    28  X X2 = {"123",'9'};
    29  X X3 = {"return-return-return",'R'};
    30  
    31  X f (B a, char b, double c, B d)
    32  {
    33    static X xr = {"return val", 'R'};
    34    X r;
    35    r = xr;
    36    r.c1 = b;
    37    sprintf (out, "X f(B,char,double,B):({%g,{%d,%d,%d}},'%c',%g,{%g,{%d,%d,%d}})",
    38  	   a.d, a.i[0], a.i[1], a.i[2], b, c, d.d, d.i[0], d.i[1], d.i[2]);
    39    return r;
    40  }
    41  
    42  X (*fp) (B, char, double, B) = &f;
    43  
    44  main ()
    45  {
    46    X Xr;
    47    char tmp[100];
    48  
    49    Xr = f (B1, c2, d3, B2);
    50    strcpy (tmp, out);
    51    Xr.c[0] = Xr.c1 = '\0';
    52    Xr = (*fp) (B1, c2, d3, B2);
    53    if (strcmp (tmp, out))
    54      abort ();
    55  
    56    exit (0);
    57  }